An earlier posting about the consecration of the Cathedral in 1910 here explained the custom of tracing the greek and latin alphabets in piles of ash across the floor of the building, as seen above.
Yesterday, Miriam - our archivist extraordinaire - came across these relics of the occasion, hidden in the vaults. The greek letters can be seen in the photograph of the consecration, placed next to the piles of ashes. Each letter was copied into the ashes, traced with the tip of the Archbishops' crozier.
The two canvas rolls, one containing a greek, and the other a latin, alphabet are too small to have reached across the nave of the Cathedral, and so I wonder whether they were used in a chapel - perhaps the Lady Chapel - for a similar ceremony.